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