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