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