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