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