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