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