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