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