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