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