One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,9)(3,7,11,5)(4,8,13,16)(10,12,15,14)(17,18,21,24)(19,22,27,25)(20,28,30,23)(26,32,29,31)(33,34,38,43)(35,41,42,37)(36,40,47,39)(44,46,45,48)(1,3,6,11)(2,5,9,7)(4,10,13,15)(8,14,16,12)(17,18,21,24)(19,22,27,25)(20,23,30,28)(26,31,29,32)(33,35)(34,37)(36,44)(38,42)(39,46)(40,48)(41,43)(45,47)(17,18)(19,22)(20,23)(21,24)(25,27)(26,31)(28,30)(29,32)(33,36)(34,39)(35,44)(37,46)(38,47)(40,43)(41,48)(42,45) involution — undirected(1,3)(2,7)(4,10)(5,9)(6,11)(8,12)(13,15)(14,16)(17,18)(19,25)(20,23)(21,24)(22,27)(26,32)(28,30)(29,31)(33,36)(34,40)(35,45)(37,46)(38,47)(39,43)(41,48)(42,44) involution — undirected(1,4)(2,8)(3,10)(5,14)(6,13)(7,12)(9,16)(11,15)(17,19,21,27)(18,22,24,25)(20,29,30,26)(23,32,28,31)(33,35)(34,41)(36,44)(37,43)(38,42)(39,48)(40,46)(45,47)(1,5,6,7)(2,3,9,11)(4,12,13,14)(8,15,16,10)(17,20)(18,23)(19,26)(21,30)(22,31)(24,28)(25,32)(27,29)(33,37,38,41)(34,42,43,35)(36,46,47,48)(39,45,40,44)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.