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