One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,7)(3,9,11,5)(4,12,13,8)(10,15,16,14)(17,18,23,26)(19,24,22,20)(21,25,31,32)(27,29,30,28)(33,34,39,43)(35,38,37,41)(36,42,47,40)(44,46,45,48)(1,3,6,11)(2,5,7,9)(4,10,13,16)(8,15,12,14)(17,19,23,22)(18,24,26,20)(21,27,31,30)(25,29,32,28)(33,35,39,37)(34,38,43,41)(36,45,47,44)(40,46,42,48)(2,7)(4,13)(5,9)(10,16)(17,20,23,24)(18,19,26,22)(21,29,31,28)(25,30,32,27)(33,36,39,47)(34,40,43,42)(35,44,37,45)(38,48,41,46)(1,4)(2,8)(3,10)(5,15)(6,13)(7,12)(9,14)(11,16)(17,20)(18,19)(21,29)(22,26)(23,24)(25,30)(27,32)(28,31)(33,37,39,35)(34,41,43,38)(36,44,47,45)(40,48,42,46)(1,5)(2,3)(4,14)(6,9)(7,11)(8,16)(10,12)(13,15)(17,21)(18,25)(19,27)(20,28)(22,30)(23,31)(24,29)(26,32)(33,36)(34,42)(35,44)(37,45)(38,46)(39,47)(40,43)(41,48) involution — undirected(1,2)(3,5)(4,8)(6,7)(9,11)(10,15)(12,13)(14,16)(17,22,23,19)(18,20,26,24)(21,30,31,27)(25,28,32,29)(33,38,39,41)(34,35,43,37)(36,46,47,48)(40,45,42,44)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.