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