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