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