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