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