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